Tunable anisotropic nonlinearity in superconductors with asymmetric antidot array

Details Tunable anisotropic nonlinearity in superconductors with asymmetric antidot array Tunable anisotropic nonlinearity in superconductors with asymmetric antidot array

2009-04-09

arxiv.org/abs/0904.1605v1

Appl. Phys. Lett. 93, 082501 (2008)

Physics

Condensed Matter

Superconductivity

5 pages, 10 figures

Scientific paper

10.1063/1.2973903

The influence of the spatial asymmetry of the pinning potential on the spectral composition of the voltage, induced in perforated superconducting Al bridges by the injection of a sinusoidal bias current, was investigated. The loss of the mirror symmetry of the pinning potential leads to the appearance of even Fourier components in the induced voltage in the vicinity of the superconducting phase transition line on the H-T diagram (H is the external magnetic field, T is temperature). Artificially-introduced asymmetry for vortex motion makes it possible to create low-resistive materials, in which nonlinearity depends on the direction of injected electrical currents.

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